B）根据短文内容及首字母提示，填写所缺单词。
Be a potato, but be the best
A young college student thought that he chose the wrong major (专业) at a mon college, so he drank every day and didn’t study at all. He b 1 more and more discouraged.
But he was never a 2 from Professor Yang’s biology (生物) class. He liked the course. Besides, Yang’s class was so i 3 that he always listened carefully, never caring about w 4 the other students were paying attention or not in class.
Once he put a note in the homework he handed in, saying: “Professor, it is said that today’s college students are c 5 than potatoes. Do you agree?”
That day Professor Yang sent for him after class. When he came, he f 6 the professor at a table with food on it. They drank happily over their meal.
When they became half drunk, the professor took out a small potato that was sprouting (发芽的). “Do you know how much this c 7 ?” he asked the young man. “It’s soft but poisonous. N 8 will take it even if it’s free. ” He then threw the potato away.
The professor then showed him another potato. It was half the s 9 of a football and perfectly round. “This potato is organic (有机的). It is not only large and fresh but also free of pollution. People are in need of such k 10 of potatoes and they’re quite expensive.”
The young man was impressed by what he’d heard. “Be such a potato,” said the professor.
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解析：
【小题1】考查动词。discouraged“气馁的”。bee是系动词，意为“变得”。故填became。
【小题2】考查固定短语。be absent from“缺席”。故填absent。
【小题3】杨教授的课很有趣。故填interesting。
【小题4】考查固定搭配。whether...or...“无论......还是......”。故填whether。
【小题5】考查比较级。根据下一段的expensive可知，这里说的是“便宜的”。根据than可知，用比较级。故填cheaper。
【小题6】考查动词。find“发现”，过去式是found。故填found。
【小题7】this指代的是a small potato，cost“花费”金钱。故填costs。
【小题8】根据上一句可知，发芽的土豆即使免费，也没人要。nobody“没有人”。故填Nobody。
【小题9】考查固定搭配。倍数+the size of...“是......的一半大”。故填size。
【小题10】a kind of“一种”。such后不用冠词。故填kind。